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Programming language: Erlang
Tags: Debugging    
Latest version: v2.5.0

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README

metrics: A generic interface to different metrics systems in Erlang.

Copyright (c) 2017-2018 BenoƮt Chesneau.

Version: 2.5.0

metrics

A generic interface to folsom, exometer, grapherl or any compliant interface. This application has been extracted from hackney.

Currently supported backend are:

If you need the support for another backend, please open a ticket.

Hex pm

Usage

Set a backend

The backend can be set in the application environment using the metrics_mod setting or using metrics:backend/1.

register a new metric:

metrics:new(counter, "c").

Depending on the backend the following metrics types can be passed: counter | histogram | gauge | meter | spiral

update a metric

A counter can simply be incremented by 1 using metrics:update/1. or by passing a positive or negative integer like this:

metrics:update("c", {c, 1}).

Other metrics are updated via metrics:update/2.

Example:


1> application:ensure_all_started(metrics).
{ok,[metrics]}
2> application:ensure_all_started(folsom).
{ok,[bear,folsom]}
3> metrics:backend(metrics_folsom).
ok
4> metrics:new(counter, "c").
ok
5> metrics:update("c").
ok
6> folsom_metrics:get_metric_value("c").
1
7> metrics:update("c", {c, 1}).
ok
8> folsom_metrics:get_metric_value("c").
2

Documentation

Full doc is available in the metrics module.

Build

$ rebar3 compile

Modules

metrics metrics_exometer metrics_folsom metrics_noop metrics_process_tracker metrics_sup